android系统添加水印
- 寻找安全模式显示的入口
如图所示，左下角有安全模式的水印，仿照此方法，重新布局我们需求中的水印即可。
显示的代码在SystemServer.java中
if (safeMode) {
mActivityManagerService.showSafeModeOverlay();
} else if (debugMode) { // 水印显示入口
mActivityManagerService.showDebugModeOverlay();
}
依葫芦画瓢写出入口，debugMode可以用属性控制
boolean disableAtlas = SystemProperties.getBoolean("config.disable_atlas", false);
final boolean debugMode = SystemProperties.getBoolean("ro.show.debug_mode", false); // 属性
try {
Slog.i(TAG, "Reading configuration...");
- 显示布局
在ActivityManagerService.java中添加UI显示
public final void showDebugModeOverlay() {
java.util.Locale locale = mContext.getResources().getConfiguration().locale;
String language = locale.getLanguage();
int resorce = com.android.internal.R.layout.debug_mode_en;
if ("zh".equals(language)) {
resorce = com.android.internal.R.layout.debug_mode_cn;
}
View v = LayoutInflater.from(mContext).inflate(resorce, null);
WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
lp.type = WindowManager.LayoutParams.TYPE_SECURE_SYSTEM_OVERLAY;
lp.width = WindowManager.LayoutParams.WRAP_CONTENT;
lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
lp.gravity = Gravity.BOTTOM;
lp.format = debugModeView.getBackground().getOpacity();
lp.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
| WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
lp.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_SHOW_FOR_ALL_USERS;
((WindowManager)mContext.getSystemService(
Context.WINDOW_SERVICE)).addView(v, lp);
}
从上面的代码可以看出，我们判断了系统的语言，在中文的时候显示中文水印，其他语言则显示英文水印，debug_mode_cn.xml也模仿safe_mode.xml写
值得注意的是，我们在framework添加layout，则需要声明：
- 水印资源
盗图啦，UI工程师牛逼(别人做的还是不上传了) - 随语言实时切换
以上功能基本实现了，大家可能注意到，切换语言后只有重启才能生效，实时切换并不会改变，所以我在又花了点时间研究一下。在语言切换的时候刷新UI
null, AppOpsManager.OP_NONE, false, false, MY_PID,
Process.SYSTEM_UID, UserHandle.USER_ALL);
if ((changes&ActivityInfo.CONFIG_LOCALE) != 0) {
+ Message msg = mHandler.obtainMessage(UPDATE_DEBUG_MODE_MSG);
+ mHandler.sendMessage(msg);
intent = new Intent(Intent.ACTION_LOCALE_CHANGED);
intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);
broadcastIntentLocked(null, null, intent,
}
break;
}
+ case UPDATE_DEBUG_MODE_MSG: {
+ synchronized (ActivityManagerService.this) {
+ showDebugModeOverlay();
+ }
+ break;
}
+ }
}
};
static final int SEND_LOCALE_TO_MOUNT_DAEMON_MSG = 47;
static final int DISMISS_DIALOG_MSG = 48;
static final int NOTIFY_TASK_STACK_CHANGE_LISTENERS_MSG = 49;
+ static final int UPDATE_DEBUG_MODE_MSG = 50;
static final int FIRST_ACTIVITY_STACK_MSG = 100;
static final int FIRST_BROADCAST_QUEUE_MSG = 200;
最终代码`
Context.WINDOW_SERVICE)).addView(v, lp);
}
+ private View debugModeView = null;
+ public final void showDebugModeOverlay() {
+ if (null != debugModeView) { // 先删除
+ ((WindowManager)mContext.getSystemService(
+ Context.WINDOW_SERVICE)).removeView(debugModeView);
+ }
+ java.util.Locale locale = mContext.getResources().getConfiguration().locale;
+ String language = locale.getLanguage();
+ int resorce = com.android.internal.R.layout.debug_mode_en;
+ if ("zh".equals(language)) {
+ resorce = com.android.internal.R.layout.debug_mode_cn;
+ }
+ debugModeView = LayoutInflater.from(mContext).inflate(resorce, null);
+ WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
+ lp.type = WindowManager.LayoutParams.TYPE_SECURE_SYSTEM_OVERLAY;
+ lp.width = WindowManager.LayoutParams.WRAP_CONTENT;
+ lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
+ lp.gravity = Gravity.BOTTOM;
+ lp.format = debugModeView.getBackground().getOpacity();
+ lp.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
+ | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
+ lp.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_SHOW_FOR_ALL_USERS;
+ ((WindowManager)mContext.getSystemService(
+ Context.WINDOW_SERVICE)).addView(debugModeView, lp); // 后添加
+ }
+
public void noteWakeupAlarm(IIntentSender sender, int sourceUid, String sourcePkg) {
if (!(sender instanceof PendingIntentRecord)) {
return;
- 效果图
